# Unit 3 Study Giude (Sandra P.)

### 15 terms by kill_me_again

#### Study  only

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newton

1N=1kg m/s2

### When an unblalanced force acts on an object? a. the object's motion does not change, b.the object accelerates, c. the weight of the object decreases, d. the inertia of the ongect increases

the objects accelerates

equal to zero

sliding

### As you push a cereal box across a tabletop, the sliding of friction acting on the cereal bos? a. acts in the direction of motion, b. equals the weight of the box, c. is usually greater than static friction, d.acts in the direction oppsite of motion.

acts in the direction oppsite of motion

### The force acting on a falling leaf are...? a. air resistance and fluid friction, b.gravity and air resistance, c. gravity and static friction, d. weight and rolling friction

gravity and air resistance

### An open patachute increases air resistance of a falling sky diver by...? a. dereasing the weight of the diver, b.increasing surface area, c. increasing the terminal velocity, d. reducing fluid friction

increasing surface area

projectil motion

### Projectile motion is caused by...? a. the downward force of gravilty, b. an initial foward velocity , c. a final vertical velocity, d.the downward force of gravity and an initial foward velocity

the downward force of velocity of gravity and an initial foward velocity

inertia

### An orange might roll off your cafeteria tray when stop suddenly because of...? a. the balanced forces acting on the orange, b. the centripetal force acting on the orange, c. the friction forces action on the orange, d.the orange's inertia

the orange's inertia

mass

6m/s2

### your weight equal your? a. mass, b. mass didided by the net force acting on you, c.mass times the acceleration due to gravity, d. mass times your speed

mass times the acceleration due to gravity

Example: